Offshore staff
ABERDEEN, UK – DeltaTek Global has deployed two technologies in Petronas Mexico’s BC-1 deepwater exploration well.
This project marks the first Gulf of Mexico deployment of its field-proven cementing technology, SeaCure, and the world’s first deepwater application of QuikCure, the company’s rapid cement hydration technology.
SeaCure provides stabbed-in inner string cementing for subsea wells. QuikCure is a patented process which uses SeaCure as a conduit for circulating heated fluids inside the casing after the cement job. This is said to increase the environmental setting temperature and help to rapidly build compressive strength in the cement.
SeaCure was used to optimize the 22-in. surface casing’s nitrogen foamed cement job and enabled a 17½-in. drill out in just under 20 minutes. According to the company, the zero shoe-track solution saved 6½ hours compared to the operator’s most recently operated subsea well that required a cleanout BHA for the 22-in. which included a 19½-in. under-reamer.
Additionally, DeltaTek recorded a maximum downhole temperature for the QuikCure heat-sweep of 99°F (37°C), which more than doubled the cement job’s placement temperature at the same depth. The additional heat added through the QuikCure process generated more than six times early compressive strength in the tail cement over eight hours.
In terms of reducing waiting on cement (WOC) time, this result was equivalent to -4 hours WOC to develop 100 psi (7 bar) in the tail slurry or -16 hours WOC to develop 500 psi (34 bar) in the lead slurry near mudline.
11/24/2021
